Bearings are shipped from the factory with a constant clearance value according to some national or international standards.
There are several types of radial internal clearance codes:
C0: Standard clearance code, this code is generally omitted and not marked in the bearing model.
C2: The clearance is slightly smaller than the standard clearance.
C3: Clearance slightly larger than standard clearance.
C4: Clearance slightly larger than C3.
C5: Clearance slightly larger than C4.
When installing the bearing, the cooperation between the bearing and the shaft, the bearing and the bearing chamber will reduce the clearance of the bearing to a certain extent. There will be a play value at this time.
During use, when the bearing rotates, the temperature difference of the material value will also reduce the internal clearance of the bearing to a certain extent.
To achieve the most ideal life, the bearing must have appropriate clearance. Clearance value = design clearance (factory clearance) - clearance reduction due to inner ring fit - clearance reduction due to outer ring fit plus or Subtract any decrease or increase in clearance due to temperature differences.
